The states of sleep
Michel Jouvet
Scientific American (1967)
TABLE OF CONTENTS

Introduction

Brain Activities in Sleep

The Two Sleep States

The Suppression of Wakefulness

Sleep Centers

Paradoxical Sleep

The Evolution of Sleep

The Chemistry of Sleep

FIGURES

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Figure 3

CAT'S BRAIN, seen in front-to-back section, has a number of segments. Some of the principal ones are identified in the illustration "BRAIN SEGMENT". Many segments of the cat's brain such as the cerebellum (top right), have no role to play in sleep.

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